http://bugs.winehq.org/show_bug.cgi?id=37052
Dmitry Timoshkov dmitry@baikal.ru changed:
What |Removed |Added ---------------------------------------------------------------------------- Version|unspecified |1.7.23
--- Comment #2 from Dmitry Timoshkov dmitry@baikal.ru --- I believe that it's basically a WM bug since neither XSetTransientForHint + XSetWMHints man pages nor ICCCM mention such a limitation about a window being mapped before setting it as transient_for parent.
See for reference https://bugzilla.gnome.org/show_bug.cgi?id=648079 https://bugzilla.gnome.org/show_bug.cgi?id=648080
At one point I had a patch with a workaround for this WM behaviour.